 He was associated very early with the Theban Legion and Victor of Solothurn, for instance in the "Roman Martyrology".The "Life of Ursus" was written by Saint Eucherius of Lyon in the 5th century; it recounts that Ursus was tortured and beheaded under Emperor Maximian and the governor Hyrtacus for refusing to worship idols around 286.The first church dedicated to Ursus in Solothurn was probably built after Viktor's remains were taken to Geneva in the late 5th century.